Update: Despite the official press release claiming that Lady Gaga had been cast to play Cilla Black in Dionne, the singer will not be appearing in the project, her rep told Variety. "Lady Gaga is not attached and will not appear in the project," her publicist said. “Reports of Gaga starring in the project are false." Earlier: Lady Gaga is set to play Cilla Black in a film based on the life of soul singer Dionne Warwick. The biopic, titled Dionne, was announced by the real Warwick at the Ca